Time-of-check Time-of-use (TOCTOU) Race Condition Affecting wasmtime package, versions >=46.0.0 <46.0.2>=47.0.0 <47.0.3
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Test your applications- Snyk IDSNYK-RUST-WASMTIME-18506910
- published2 Aug 2026
- disclosed31 Jul 2026
- creditUnknown
Introduced: 31 Jul 2026
New CVE NOT AVAILABLE CWE-367 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade wasmtime to version 46.0.2, 47.0.3 or higher.
Overview
Affected versions of this package are vulnerable to Time-of-check Time-of-use (TOCTOU) Race Condition in the handling of preemption and traps during bulk operations. An attacker can disrupt the internal virtual machine state by triggering specific trap conditions or preemption events during these operations.